 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/


 package org.eclipse.ui.texteditor;


 import org.eclipse.swt.widgets.Composite;

 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.Plugin;

 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.resource.JFaceResources;
 import org.eclipse.jface.text.PropagatingFontFieldEditor;

 import org.eclipse.ui.plugin.AbstractUIPlugin;


 /**
  * This font field editor implements chaining between the workbench's preference
  * store and a given target preference store. Any time the workbench's preference
  * for the text font changes, the change is propagated to the target store.
  * Propagation means that the actual text font stored in the workbench store is set as
  * default text font in the target store. If the target store does not contain a value
  * rather than the default text font, the new default text font is immediately effective.
  *
  * @see org.eclipse.jface.preference.FontFieldEditor
  * @deprecated since 3.0 not longer in use, no longer supported, use a
  * <code>ChainedPreferenceStore</code> to access preferences from the
  * <code>org.eclipse.ui.editors</code> plug-in.
  * @since 2.0
  */
 public class WorkbenchChainedTextFontFieldEditor extends PropagatingFontFieldEditor {

     /**
      * Creates a new font field editor with the given parameters.
      *
      * @param name the editor's name
      * @param labelText the text shown as editor description
      * @param parent the editor's parent widget
      */
     public WorkbenchChainedTextFontFieldEditor(String name, String labelText, Composite parent) {
         super(name, labelText, parent, EditorMessages.WorkbenchChainedTextFontFieldEditor_defaultWorkbenchTextFont);
     }

     /**
      * Starts the propagation of the text font preference set in the workbench
      * to given target preference store using the given preference key.
      *
      * @param target the target preference store
      * @param targetKey the key to be used in the target preference store
      */
     public static void startPropagate(IPreferenceStore target, String targetKey) {
         Plugin plugin= Platform.getPlugin("org.eclipse.ui.workbench"); //$NON-NLS-1$
 if (plugin instanceof AbstractUIPlugin) {
             AbstractUIPlugin uiPlugin= (AbstractUIPlugin) plugin;
             IPreferenceStore store= uiPlugin.getPreferenceStore();
             if (store != null)
                 PropagatingFontFieldEditor.startPropagate(store, JFaceResources.TEXT_FONT, target, targetKey);
         }
     }
 }


